If (a + b + c): d = 5: 1, (b + c + d): a = 7: 1 and, (c + d + a): b = – McqOptions

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1.	If (a + b + c): d = 5: 1, (b + c + d): a = 7: 1 and, (c + d + a): b = 3: 1 then find a: b: c: d?
A.	1 : 2 : 4 : 1
B.	4 : 2 : 4 : 5
C.	3 : 6 : 11 : 4
D.	7 : 4 : 4 : 3
Answer» D. 7 : 4 : 4 : 3

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